“Put it back, please, oh, put it back,” Martin pleaded. “You were too quick for me.” Now Deviation is the variation in the needle caused by the distribution of iron on board of ship. This purely local variation I derived from the deviation card of my standard compass and then applied to the Correct Magnetic Course. The result was the Compass Course. And yet, not yet. My standard compass was amidships on the companionway. My steering compass was aft, in the cockpit, near the wheel. When the steering compass pointed west-by-south three-quarters-south (the steering course), the standard compass pointed west-one-half-north, which was certainly not the steering course. I kept the Snark up till she was heading west-by-south-three-quarters-south on the standard compass, which gave, on the steering compass, south-west-by-west.!

So the days passed. There was so much to be done that time never dragged. Had there been little to do, time could not have dragged with such wonderful seascapes and cloudscapes—dawns that were like burning imperial cities under rainbows that arched nearly to the zenith; sunsets that bathed the purple sea in rivers of rose-coloured light, flowing from a sun whose diverging, heaven-climbing rays were of the purest blue. Overside, in the heat of the day, the sea was an azure satiny fabric, in the depths of which the sunshine focussed in funnels of light. Astern, deep down, when there was a breeze, bubbled a procession of milky-turquoise ghosts—the foam flung down by the hull of the Snark each time she floundered against a sea. At night the wake was phosphorescent fire, where the medusa slime resented our passing bulk, while far down could be observed the unceasing flight of comets, with long, undulating, nebulous tails—caused by the passage of the bonitas through the resentful medusa slime. And now and again, from out of the darkness on either hand, just under the surface, larger phosphorescent organisms flashed up like electric lights, marking collisions with the careless bonitas skurrying ahead to the good hunting just beyond our bowsprit. And now to the particular physics of surf-riding. Get out on a flat board, six feet long, two feet wide, and roughly oval in shape. Lie down upon it like a small boy on a coaster and paddle with your hands out to deep water, where the waves begin to crest. Lie out there quietly on the board. Sea after sea breaks before, behind, and under and over you, and rushes in to shore, leaving you behind. When a wave crests, it gets steeper. Imagine yourself, on your hoard, on the face of that steep slope. If it stood still, you would slide down just as a boy slides down a hill on his coaster. “But,” you object, “the wave doesn’t stand still.” Very true, but the water composing the wave stands still, and there you have the secret. If ever you start sliding down the face of that wave, you’ll keep on sliding and you’ll never reach the bottom. Please don’t laugh. The face of that wave may be only six feet, yet you can slide down it a quarter of a mile, or half a mile, and not reach the bottom. For, see, since a wave is only a communicated agitation or impetus, and since the water that composes a wave is changing every instant, new water is rising into the wave as fast as the wave travels. You slide down this new water, and yet remain in your old position on the wave, sliding down the still newer water that is rising and forming the wave. You slide precisely as fast as the wave travels. If it travels fifteen miles an hour, you slide fifteen miles an hour. Between you and shore stretches a quarter of mile of water. As the wave travels, this water obligingly heaps itself into the wave, gravity does the rest, and down you go, sliding the whole length of it. If you still cherish the notion, while sliding, that the water is moving with you, thrust your arms into it and attempt to paddle; you will find that you have to be remarkably quick to get a stroke, for that water is dropping astern just as fast as you are rushing ahead.

“Then when you are a hundred you won’t be sleeping at all,” I interjected. Leprosy is not so contagious as is imagined. I went for a week’s visit to the Settlement, and I took my wife along—all of which would not have happened had we had any apprehension of contracting the disease. Nor did we wear long, gauntleted gloves and keep apart from the lepers. On the contrary, we mingled freely with them, and before we left, knew scores of them by sight and name. The precautions of simple cleanliness seem to be all that is necessary. On returning to their own houses, after having been among and handling lepers, the non-lepers, such as the physicians and the superintendent, merely wash their faces and hands with mildly antiseptic soap and change their coats. But that night came rain. Martin, whose psychological thirst had compelled him to drink his quart of water early, got his mouth down to the lip of the awning and drank the deepest draught I ever have seen drunk. The precious water came down in bucketfuls and tubfuls, and in two hours we caught and stored away in the tanks one hundred and twenty gallons. Strange to say, in all the rest of our voyage to the Marquesas not another drop of rain fell on board. If that squall had missed us, the handcuffs would have remained on the pump, and we would have busied ourselves with utilizing our surplus gasolene for distillation purposes.